Principle is often pragmatism’s guardian. Particularly at times of crisis, when a polity succumbs to collective madness or delusion, it is only the obstinate ideologues who refuse to go along. Expediency may be a virtue in virtuous times, but it’s a vice in vicious ones.

There’s another problem with the fetishization of the pragmatic, which is the brute fact that, at some level, ideology is inescapable. Obama may have told Steve Kroft that he’s solely interested in “what works,” but what constitutes “working” is not self-evident and, indeed, is impossible to detach from some worldview and set of principles.